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Re: Fuel Out of Vent Tube

To: mgs@Autox.Team.Net, "William H. Ball" <bball@staffnet.com>
Subject: Re: Fuel Out of Vent Tube
From: Paul Hunt <paul.hunt1@virgin.net>
Date: Fri, 11 Apr 1997 20:20:01 +0000
William H. Ball wrote:
> 
> On Mon, 7 Apr 1997, Craig Wiper wrote:
> 
> > At 04:21 PM 4/7/97 -0400, bball@staffnet.com wrote:
> > >When I tried restarting the engine, i could hear the fuel pump clicking
> > >away before engaging the starter... the engine would then not start after
> > >engaging the starter... i then smelled gas, quickly turned off the engine,
> > >and looked under the car... fuel was coming out of the vent tube
> > >(connected to the running-on-control valve, which is connected to the
> > >charcoal adsorption canister) and pouring onto the floor!
> > >
> > >i noticed a vapor line from the twin-HIF carbs was disconnected and
> > >reconnected it... i have not tried restarting the car, as it appears that
> > >there is definitely gas in the adsorption canister...
> > >
> > >any ideas? i'd appreciate anything...
> > >
> > >p.s. i recall a message from a fellow several months back who had his
> > >canister fill up with gas, but can't recall the problem or the fix...
> > >
> > Replace your needle valves with Grose Jets. Mine hasn't leaked that way
> > since I replaced them years ago. Also, you might want to drill a very small
> > hole (1/16") or so in your gas cap. Often, when my car would be sitting in
> > the sun all day on a hot day, the fuel tank would build up pressure and
> > force gas through the vent tube at the tank all the way up to the charcoal
> > canister and the fuel would spill out the anti-run-on valve. I solved this
> > by doing just that; drilling a small hole in the seal of the cap to allow
> > the fuel tank pressure to stay equalized no matter how hot it got. Just my
> > 2c worth.
> >
> > Craig Wiper
> > craigw@sonic.net
> > http://www.sonic.net/~craigw
> >
> thanks craig... but how do i rectify the current problem? are you saying
> that it's the jets in the carbs? so i have to disassemble the carbs to
> clean the jets? and it isn't the fuel pump?
> 
> billy ball

Not the jets, the float valves.  Disconnect the fuel pump and run the 
engine till it cuts out.  Reconnect the fuel pump and turn on the 
ignition, this may clear any small particle in the valve.  If the 
problem persists replace the valve(s).  If it still persists you 
probably have particles in the tank/pipes.

PaulH.


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